<template>
  <el-upload
    class="avatar-uploader"
    :name="uploadNameUse"
    :action="UploadUrl"
    :show-file-list="false"
    :on-success="handleAvatarSuccess"
    :before-upload="beforeAvatarUpload"
    accept="image/"
  >
    <img v-if="uploadImageUrlUse" :src="uploadImageUrlUse" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
  </el-upload>
</template>

<script>
export default {
  name: 'ImageUpload',
  props: {
    uploadName: {
      required: true,
      type: String
    },
    uploadImageUrl: {
      required: true,
      type: String
    }
  },
  data() {
    return {
      UploadUrl: process.env.VUE_APP_BASE_API + '/site/file-upload',
      uploadNameUse: this.uploadName,
      uploadImageUrlUse: this.uploadImageUrl
    }
  },
  watch: {
    uploadName: {
      handler(newVal, oldVal) {
        this.uploadNameUse = newVal
      }
    },
    uploadImageUrl: {
      handler(newVal, oldVal) {
        this.uploadImageUrlUse = newVal
      }
    }
  },
  methods: {
    handleAvatarSuccess(res, file) {
      this.uploadImageUrlUse = URL.createObjectURL(file.raw)
      this.$emit('getReturnImageUrl', res.data)
    },
    beforeAvatarUpload(file) {
      // const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 5

      // if (!isJPG) {
      //   this.$message.error('上传头像图片只能是 JPG 格式!')
      // }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 5MB!')
      }
      // return isJPG && isLt2M
      return isLt2M
    }
  }
}
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    display: block;
  }
</style>
